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ts; esp., in America, a small biting fly of the genus Simulium and allies, as the buffalo gnat, the black fly, etc. Gnat catcher (Zoöl.), one of several species of small American singing birds, of the genus Polioptila, allied to the kinglets. -- Gnat flower, the bee flower. -- Gnat hawk (Zoöl.), the European goatsuck…

Of or pertaining to the jaw. Gnathic index, in a skull, the ratio of the distance from the middle of the nasofrontal suture to the basion (taken equal to 100), to the distance from the basion to the middle of the front edge of the upper jaw; -- called also alveolar index. Skulls with the gnathic index below 98 are orth…

The ramus of the lower jaw of a bird as far as it is naked; -- commonly used in the plural.

Any one of the mouth appendages of the Arthropoda. They are known as mandibles, maxillæ, and maxillipeds.

Flattering; deceitful. [Obs.]

A gnathopodite or maxilliped. See Maxilliped.

Any leglike appendage of a crustacean, when modified wholly, or in part, to serve as a jaw, esp. one of the maxillipeds.

One of a pair of broad plates, developed from the outer maxillipeds of crabs, and forming a cover for the other mouth organs.

st with the leptocardians and marsipobranchs (Cyclostoma), which lack them. [Written also Gnathostomata.]

The horney covering of the lower mandible of a bird.

A small gnat.

The aquatic larva of a gnat; -- called also, colloquially, wiggler.

Allied; akin. "Agnate words." Pownall. Assume more or less of a fictitious character, but congenial and agnate with the former. Landor.

Pertaining to descent by the male line of ancestors. "The agnatic succession." Blackstone.

Consanguinity by a line of males only, as distinguished from cognation. Bouvier.

One of the notes, bills, or bonds, issued as currency by the revolutionary government of France (1790-1796), and based on the security of the lands of the church and of nobles which had been appropriated by the state.

apportionment. This order being taken in the senate, as touching the appointment and assignation of those provinces. Holland.

Of or pertaining to the Chætognatha.

An order of free-swimming marine worms, of which the genus Sagitta is the type. They have groups of curved spines on each side of the head.

A myriapod of the order Chilognatha.